Antigas fading anthraqijinone dyes



Patented Feb. 12, 1952 UNITED "STATES PATENT OFFICE 2,585,681 ANTIGAS FADING ANTHRAQUINONE DYES David I. Randall, Easton, Pa., and Edgar-Elimifrew, Phillipsburg, N. J., assignors to General Aniline & Film Corporation, New York, N. Y., a corporation of Delaware No Drawing. Application December 10, 1949, Serial No. 132,391

6 Claims. 1 The present invention relates to dyestuffs of the anthraquinone series which are particularly useful for dyeing acetate rayon and which yield violet or bluish-violet shades thereon.

We have discovered a series of new and valuable dyestuffs which are essentially hydroxyethoxymethyl phenylaminoanthraquinones and derivatives thereof having the general formula:

Y' O Y wherein X is selected from the group consisting of hydrogen and methyl, R is selected from the group consisting of hydrogen and CHzOCHzCHzOZ, Z is selected from the group consisting of hydrogen, hydroxy alkyl and alkoxy alkyl, and Y is selected from the group consisting of hydrogen, hydroxy and OH2OOH2OH2OZ These compounds exhibit substantially enhanced substantivity for acetate rayon and in addition they have the ability to withstand the action of acid-gas fumes such as the combustion products of industrial and engine fuels. This property is a very important one, as most existing dyestuffs which color cellulose acetate in violet and blue shades fade badly when exposed to acid-gas fumes; certain previously reported products which do have good gas-fading fastness have other disadvantages such as poor fastness to light. In the 1-hydroxy-4-arylaminoanthraquinones described herein, we have discovered a series of ,bluish violet dyestuffs which combine the desirable properties. of good substantivity and good light fastness, washfastness and gas fume fastness.

The compounds described herein which are 1,4- diarylaminoanthraquinones are characterized by good substantivity and by good fastness to wash- .ing and to light. The good substantivity is remarkable; no other greenish dyestuffs in the anthraquinone series which have such good substantivity are known; usually compounds of comparable molecular weight have virtually no aifinity for acetate rayon. The washfastness is excellent and the gas fastness much superior to known compounds; undyedacetate fiber in the washing test vessel picks up no stain.

The following examples are illustrative of preferred embodiments of the invention but it will be understood that variations and substitutions may be made within the scope of the claims.

Example 1 C. and the stream of air was bubbled through the mixture. The solid was isolated by filtration and restirred for twenty minutes with hot solution of 800.0 parts water and 5.6 parts sodium hydroxide. The solid was separated by filtration and the preceding step inthe procedure was repeated. The cake after washing with water and drying weighed 24 parts;

It has the structure:

(EH20 CHzCHzOH After dispersion with a, suitable agent, for instance, Marasperse CB made by the Marathon Corporation, Rothschild, Wisc. (as prepared in USP 2,371,136) the product dyed cellulose acetate 'bright bluish-violet shades in good strength. The

dyeings showed excellent fastness to washing, to light and to combustion gas fumes.

Example 2 The dyestufi of the structure:

the '2-'(5-amino-o-tolylmethoxy) ethanol.

was prepared exactly as was the product of Example 1, except that the 2-(5-amino-o-tolylmeth- 'oxy) ethanol was replaced by 16.7 parts of 2-maminobenzyloxyethanol. The dyestufi when prepared as'faidispersed'powder yilde'd'violet shades on celluloseacetate. 'The substantivity-of the dyestuff was very good, and the fastness to light, washing and gas fading was excellent.

Ewample The product of the structure:

OH H cmoomonzon NH CH3 HzO'OHzCHiOH was prepared according tothe' method'oi Example 1, except that 25.5 parts 'of '2,2'-(4'--amino-i-2,6- tolylenedimethoxy) diethanol was'use'dinstea'd of The product, after dispersion'witha suitable :a'ge'nt yielded full bright bluish-'violetshades 'on cellulose acetate fiber. Thegproperties, especially gasfastness, washfastness and lightfas-tness were excellent.

v Eftllmple 4 The compound at the structure:

was prepared like'the 'product'o'f- Example 1 except that 22.5 g. of a-2-(2-methoxyethoxy) ethoxy -m-toluidine was used instead 'of -2- (5- violet shades of good properties 'When dyed-Tin cellulose 'acetat'e fiber.

Example '5 V In a suitable vessel was icharged 9.;0 zpa'rts of quinizarin, 3.0 parts of leucoquinizarin, 6.0 parts boric acid, 14.7 parts 2-(2-m-aminobenzyloxyethoxy) ethanol and 96.0 partsabsoluteethanol. The mixture was maintained at 80 C. while stirring for sixteen hours. sodium perborate in 25.0 parts water. 'Heating was continued for one hour, after which was added 200 parts water. Separation occurred, and .the liquid iphasewas discarded. The-solid material was leached twice with hot dilute base essentially-:thesame way-as described in Example 1. The product'dyed acetate rayon .in rich Violet shades of excellent properties' It has theistructure OOH Ill Example 6 V In a suitable vessel-wasplaced 10.0 parts quini- 4 93.0 parts Cellosolve. The mixture was maintained at 90-95 C. for sixteen hours. The solution was poured into a 2500 parts water, and the material which separated was isolated by decanta- "tion. :The semi-solid product' was dissolved in 180 parts acetone and the'solution pouredinto 660 parts warm sodium hydroxide solution (1.8%) and the solid which settled out was again dis- -solved-in acetone and reprecipitated from aqueous base? Thesolid'was collected on a filter, washed an'd d ri'ed- "When-suitably dispersed, this materi'a1 c'olored cellulose acetate fibers strongly in Then was added 3.5 parts I zarin, 5.9 parts leucoquinizarin, 11.8 parts boric acid, 26.2 parts 2-m=aminobenzy1oxy ethanol and beautiful blue-green shades of good fastness to *adidgas fumes and excellent fastness to light and washing. :Ithas the structure:

'was madebythelsame procedure :as the product in Example '6, 'except'the 2--'m'-arninobenzyloxyethanol'is replaced by an equivalent amount 'o'f 2-'('B-amino-o-tolyl=methoxy) ethanol. The properties of the product are similar *totlroseoi the product of Example fi.

Example 8 The dyestufi of the structure:

' naocmomon 931E2 0 onto neon was made by the' same iproc'edure a's the product in Example 6, except that 2-'=maminobenz$ loythiiifiil was replaceii byan equivalent amount d 2-(5- amino-'c-tol-ylinethoxy ethanoh lfhe prop erties e f th'e product were simuar m those of the lfirodiicil'iif; 6. l

Example '9 par't's absolute ethanol. The mixture washeated "att'he boiling for sixteen hours while being "stirred. To the mixture was added 800.0 -"pa f Water containing 50 parts -a ueous soii'iun'i hy droxida sdldtien 20 and the' mixtwe heated. The-"components were sep'aina teil *decantation, and the semi-solid product treated by this procedure twice more. The isolated product was then boiled one hour with 300 parts nitrobenzene and the solvent removed by steam distillation. The solid residue was isolated and dried. On dispersion it yielded blue dyeings of good properties on cellulose acetate fibers. It has the structure:

In a suitable vessel were placed 19.9 parts 4,8- dibromoanthrarufin, 38.3 parts 2,2'-(4-amino- 2,6 tolylenedimethoxy) diethanol, 16.4 parts freshly fused sodium acetate, 1.0 part cuprous chloride, 0.5 part copper powder and 200.0 parts nitrobenzene. The mixture was heated at 130 C. for eighteen hours, then at 165 C. for sixteen hours more; during these periods it was stirred. The nitrobenzene was driven off with steam and the remaining solid was separated from water by filtration. After.crystallization from chlorobenzene, the product dyed cellulose acetate fibers in attractive blue shades which showed good properties in washing tests, Fadeometer tests and combustion fume tests. The dye has the structure:

QNH OH Hoomomo H? A GHzOGEhCHrOH H I NH We claim: 1. Dyestufis of the general formula:

0H,0oH=oH,oz

Y NH X wherein X is selected from the group consisting of hydrogen and methyl, R is selected from the group consisting of hydrogen and CHzOCHzCHzOZ Z is selected from the group consisting of hydrogen, hydroxy alkyl and alkoxy alkyl, and Y is selected from the group consisting of hydrogen, hydroxy and (fHzOCHzCHaOZ 6 2. A dyestuff having the formula:

0 OH ll |CHzOCHzOHzOH 0 3. A dyestuif having the formula:

0 OH H omo 011,011,011

3) NH CH;

. HzQCHzCHqOH 4. A dyestuff having the formula:

CHQOCHBCHQOH t omocmoHzoH 5. A dyestuff having the formula:

omoomomoH NH CH;

HzOOHzCHgOH 011,0 omomoH H OH;

m0 01110112011 6. A dyestuif having the formula: 0H HOGHOHQOOHI CH3OOH1CH1OH H Q DAVID I. RANDALL. EDGAR E. RENFREW.

REFERENCES CITED The following referencesare of record in the file of this patent:

UNITED STATES PATENTS 'Number Name Date 2,053,343 Lodge et a1 Sept. 8, 1936 2,353,108 Wuertz et a1 July 4, 1944 FOREIGN PATENTS Number Country Date 593,955 Great Britain Oct. 30, 1947 

1. DYESTUFFS OF THE GENERAL FORMULA: 